*{
  margin: 0;
  padding: 0;
}
html,body,#root,.App{
    width: 100%;
    height: 100%;
}
.alls{
  display: flex;
  height: 40px;
  line-height: 40px;
  justify-content: space-around;
}
.allbody{
  width: 100%;
  height: 100%;
}
.allhead{
  width: 100%;
  height: calc(100% - 40px);
}
.active{
  color: red;
}
